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Finding the Fourth Proportional to 77,333.42, 115,981.65 and 56,518.65

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Solution

The fourth proportional to 77,333.42, 115,981.65 and 56,518.65 is: 84,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,333.42 : 115,981.65 = 56,518.65 : x
  2. Step 2: Convert to fraction form
    77,333.42/115,981.65 = 56,518.65/x
  3. Step 3: Cross multiply
    77,333.42x = 115,981.65 × 56,518.65
  4. Step 4: Simplify right side
    77,333.42x = 6,555,126,282.77
  5. Step 5: Solve for x
    x = 6,555,126,282.77/77,333.42
  6. Step 6: Final answer
    x = 84,764.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.